Following equilibrium exists in an aqueous solution of hydrogen sulphide : {H₂}S rightleftharpoons

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6-2.Equilibrium-II (Ionic Equilibrium)

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The following equilibrium exists in an aqueous solution of hydrogen sulphide : ${H_2}S $ $\rightleftharpoons$ $ {H^ + } + H{S^ - }$

If dilute $HCl$ is added to an aqueous solution of ${H_2}S$ without any change in temperature

A

The equilibrium constant will change

B

The concentration of $H{S^ - }$will increase

C

The concentration of undissociated ${H_2}S$ will decrease

D

The concentration of $H{S^ - }$will decrease

Solution

(d) In aqueous solution following euilibrium is exist. ${H_2}S⇌{H^ + } + H{S^ – }$
While adding the dilute $HCl $ solution

$(HCl⇌{H^ + } + C{l^ – })$ equilibrium is shift to the left side in ${H_2}S⇌{H^ + } + H{S^ – }$

Standard 11

Chemistry

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